The world No.4 told fans via his Facebook page that an elbow injury has ruled him out of further action, adding that he wanted to ensure his recovery goes as smoothly as possible to ensure his career can continue for many years to come.

Djokovic , who was already expected to miss the US Open , also revealed that his partnership with Andre Agassi would continue in 2018.

(Image: REUTERS)

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"I am happy to share that Andre Agassi is committed to stay with me next year," he said.

The 12-time major champion was forced to retire injured during his Wimbledon quarter-final against Tomas Berdych earlier this month and said after the match he had been feeling pain in his right elbow for mpre than a year and a half.